package com.atguigu.springcloud.controller;

import com.atguigu.springcloud.entities.CommonResult;
import com.atguigu.springcloud.entities.Payment;
import com.atguigu.springcloud.lb.LoadBlancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author zz_source
 * @creat 2022-08-25-18:58
 */
@RestController
@Slf4j
public class OrderController {

    private static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

//    private static final String PAYMENT_URL = "http://localhost:8001";

    @Resource
    @Qualifier(value = "EurekaRestTemplate")
    private RestTemplate restTemplate;

    @Resource
    private LoadBlancer loadBlancer;

    @Resource
    private DiscoveryClient discoveryClient;

    @PostMapping(value = "/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        return restTemplate.postForObject(PAYMENT_URL + "/payment/create" , payment , CommonResult.class);
    }

    @GetMapping(value = "/consumer/payment/get/{id}")
    public CommonResult<Payment> getPatment(@PathVariable("id")Long id){
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id ,CommonResult.class);
    }

    @GetMapping(value = "/consumer/payment/getForEntity/{id}")
    public CommonResult<Payment> getPatment2(@PathVariable("id")Long id){
        ResponseEntity<CommonResult> entity =restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id ,CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else {
            return new CommonResult<>(444,"操作失败");
        }
    }

    @GetMapping(value = "/consumer/payment/getForEntity3/{id}")
    public CommonResult<Payment> getPatment3(@PathVariable("id")Long id){
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else {
            return new CommonResult<>(444, "操作失败");
        }
    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLB(){
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances == null || instances.size() <= 0){
            return null;
        }
        //传入服务services
        ServiceInstance serviceInstance = loadBlancer.instances(instances);
        URI uri = serviceInstance.getUri();

        return restTemplate.getForObject(uri + "/payment/lb",String.class);
    }

}
